今天在qt下编译一个linux线程的程序
void thread()
{
    int i;
    for(i=0;i<3;i++)
    {
        printf("This is a pthread\n");
    }
}
int main()
{
   pthread_t id;
    int i,ret;
    printf("asd");
    ret=pthread_create(&id,NULL,thread,NULL);
    if(ret!=0)
    {
        printf("Create pthread error\n");
        exit(1);
    }
    for(i=0;i<3;i++)
    {
        printf ("this is the main process\n");
    }
    pthread_join(id,NULL);
    return 0;
}
但是运行是出现问题
: 错误:invalid conversion from 'void (*)()' to 'void* (*)(void*)' [-fpermissive]
这是怎么回事?